Stenciling-machine.



Patented ANov.A 12, 1912*.

fication.

fountain UNITED `STATES PATENT orjFicE. y

To all whom 'it may conce-rn A Be it known that I, ALEXANDER J. SMITH,

a citizen of the United States, residing 4in` Stamford, in the county of Fairfield and Stateof'Connecticut, have invented certain new and useful Improvements in Stenciling- Machines, of which the following is a specifeed of ink from the'fountain. For this purpose I provide a cylindrical multiplex valve, endwise to and fro, to o'penf ink feeding perforations in thewhich is slidable or close the fountain; said valve being housed in a tube contained in the ink fountain, and having suitable perforations forthe passage of ink.

Other features and advantages will hereinafter appear. I

Iii the accompanying drawings, Figure 1- is a perspective sectional view of a stencil cylinder rovided with the present improvements. I lgig. 2 is a sectional view toxillustrate a portion of the ink-feeding valve, c tc. Fig. 3 is a cross section of the fountain. Fig. 4 is an elevation 'of the outer end` of the fountain. Fig. 5 is a longitudinal central section of the fountain.

erforations A stencil cylinder 1, having throughout 2, is usually mounted at one end y means of a screw stud or -ournal 3 upon i a post 4, forming part of the ramework; the

cylindrical box or fountain er end of the'cylinder being y.usually supported upon rolls, (not shown);

The stencil-ing ink'v is supplied in 'a long 7. The .ink may Abe sold in this fountain ready to slip in place upon the stencil cylinder. i

The ink fountain is slipped upon a central stud or axle 8, the end of which isinserted in a hub 9 of the stencil cylinder 1. A nut 10, threaded upon the pro]ecting end of the stud 8, draws Specification of Letters Patent.

Original applicati-on filed October 9, 1909, Serial No.521,919. Divided and Serial No. 581,750.

-stud a tain may op be a shoulder 11 on said,stu d this application filed September against the end of the hub 9, thus giving the may be easily withdrawn to permit detachment of the stencil cylinder from the machine.

The ink fountain 7 is provided with a central tube or hollow core 12, which slips loosel upon the stud 8, the latter extending preferably the full length of the fountain, and having a spring latch 13 to catch over the end of the ink fountain (Fig'. 5) to secure the latter against accidental detachment.

It will be understood that sired to take the fountain Iout, it is only necessary to depress the latch 13 to release the be vslipped oft' fountain, which 4may then from the stud 8. In replacing the fountain -it 1s lonlynecessary to slip itonto the studV 8 as faias it will go.

The outer end or head 14 of the inkfoun e formed upon tllfe cap 15 dremovable for convenience in inspecting and cleaning the interior of the fountain. Said cap may 'have a hub 16- threaded upon the inner end of the tubular core 12; a soft washer' 17 being ,pressed by Patented Nov. l12, 1912.

firm mounting. The screw journal 3. is vthreaded into the end of saidstud 8, and

Yhen 4it is derm'anently secured to vor cylindrical body thereof; and the inner head may be in the form of a the hub 16 against an a'nnular'shoulder 1S on the core 12, to 'prevent leakage of ink at this joint.- lA soft disk or gasket 19 may be forced by .the cap 15 against the end of the box 7 to prevent leakage.

The feed of the ink froniithecylinder is controlled by a valve rod 20 having abuttonV and fitting in a tubular housing 22 within the ink fountain vand ex 21 .on'its outer end tending from e'nd to end thereof gv the outer head' 14 of the ,fountain beingfperforated and the rod 20. projecting there om. Ink flows' from thefountain into'the tubular housin 22 through pairs. of perforations 23 forme in opposite sides of the latter, Figs.

2 and3; and the inkfeeds out of said housing through perforations 24 recsteringwith .the perforatioi1s2j3 and extending in a line along the bottom or side of the ink fountain.

The Valve rod 20 is formed with annular grooves .or recesses 25 to register with all of said perforati'ons, as at Fig.l 5, toV permit.

ink to flowfreely from the'fountainthrough thence Y the tubular 'housing or guide 22and 30 f of the fountain asI a separate article of -ter with the openings 23, 24:,

out through the openings 24 Ifalling to the bottom of the stencil cylinder 1. A stop 26 ixed upon the fountain projects into a Wide annular groove 27 formed in the valve rod and limits the throw of the latter. 'When the rod is pushed in as far as it will go, the grooves are carried entirely out of regissaid openings being all closed by the uncut portions of the multiple valve rod 20. By adjusting said rodl to different positions, the ink may be caused to flow either freely or slowly. The stop 26 is in the form of a screw to permit its removal, so that the multiple valve rod may be Svvithdrawn it is desired, to ...cause the ink to fl'ovvkmore freely, the operator may workback and forth a handle 28 provided upon the end of a rod 29, Which projects through a'stuiiing box 30, and carries. at its inner end a piston .31 having a number of perforations 32 and cut away at 33 to clear the valve housing 22. This piston may also be cut-away onmay be moved easily.

its edge or side at34, to clear. projecting supply nipple 35, reduce the .area of the piston,

an inwardly and also to so that it yThe handles 21'.l and 28 are both adapted to-lie close to the body of the fountain, which is a great advantage during transportation manufacture. i y Variations may be resorted to Within the scope of theinvention,` and portions of the 4improvements maybe used Without others.

This is a division of my application No. 521,919, filed October 9, 1909 (Patent No.

l 97 6,704, of November 22, 1910).

- The feature of the ink-stirrer is common to this application and the co-pending application No. 513,377 upon which said Patent I' v No. 975,471 Was granted; but'it is claimed only in the present appiication.

Having thus descri ed my invention, I claim: a

1. A fountain for an open-ended stencil cylinder of a stencil mach1ne,said fountain in the Vform of a box, an ink-stirring plunger in said box, and a handle to move saidY plunger to and fro, said handle arranged to be accessible .at the openend of the stencil cylinder. f

2. In a stencilingmachine, the combination With a lstencil cylinder open at one'end, of an ink fountain supported Within said cylinder, means within the fountain for stirring the ink, anda handle arranged to be'accessible at the openl end of vsaid cylinder, and connected to said stirring means. s 3. An ink fountain adapted to be shipped as a unit, comprising 'a body'provided with from the fountain. If-

openings, a valve closing said openings, a stirring piston, and handles for said valve and said piston adapted to lie close to said body.

4. An ink fountain adapted to be shipped as a unit comprising a body provided with openings and having a hollow core adapted to fit on a stud, a valve for said openings, a stirring piston, and handles for said valve and piston adapted to lie close to said body.

5. An ink fountain adapted to be shipped as a unit comprising a body, a tubularhousing carrying .openings from said body,a piston valve in said/ housing, a hollow core in said body adapted to fit over a stud, a stirring piston in said body, and handles for said-valve and stirring piston adapted to lie close to saidbody.

6. An ink fountain for a stenciling machine, said fountain in the form of a box and containing an outlet valveand also havlng an interior ink-stirrcr provided with a handle external to the fountain.

7. A fountain for an open-ended stencil cylinder of a stencilmg machine, said fountain in the forni of a box having a hollowcore to slip upon an arbor within the stencil cylinder, an ink-stirring plunger in said box, and a, rod fast to said plunger eccentrically of said core and extending to the exterior of the fountain and having at its extended end a finger-piece. I

8. In a stenciling machine, the combination with a stencil cylinder having an open end, of a central stud extending from the closed end toward the open end of said cyl inder, an ink fountain having a hollow core and slipped onto said stud, means Within the fountain for stirring the ink, a rod connected to said ink-stirring means and extending through the end of the ink fountain, and a handle or linger-piece connected to saidrod and accessible at the open end of the cylinder.

9.1n a stenciling machine, the combination with astcncil cylinder having an open end, of a central stud extending from the closed end toward the open end of said cylinder, an ink fountain having a hollow core and slipped onto said stud, means within the fountain for stirring the ink, a rod connected to said ink-stirring means and extending through the end of the ink fountain, and a handle ,or linger-piece connected to saidlrod and accessible at the open end of the cylinder; said rod eccentric to said hollow core.

ALEXANDER J. SMITH. Witnesses K. FRANKFORT, C. RIPLEY. 

